Recent Homes Have Just Over 3 Toilets, 2.5 Showers 
BY PAUL EMRATH 
Click Here for Full Article

Single-family homes built after the 1990s have an average of 3.1 toilets, 2.6 showers and 2.3 bathtubs, according to a recent NAHB study.
Standard tables from the Survey of Construction (SOC, conducted by the U.S. Census Bureau with partial funding from HUD) show that the share of single-family homes built with at least 2 bathrooms has increased regularly from 60 percent of homes completed in 1973 to 97 percent of homes completed in 2016.  This suggests that the number of bathroom fixtures should also be on the riese, but this is not one of the things that it has been possible to investigate using SOC data.